ffi: expose Server Name Indication to FFI

quiche/include/quiche.h

@@ -485,6 +485,9 @@ void quiche_conn_peer_cert(const quiche_conn *conn, const uint8_t **out, size_t
 // Returns the serialized cryptographic session for the connection.
 void quiche_conn_session(const quiche_conn *conn, const uint8_t **out, size_t *out_len);
 
+// Returns the server name requested by the client.
+void quiche_conn_server_name(const quiche_conn *conn, const uint8_t **out, size_t *out_len);
+
 // Returns true if the connection handshake is complete.
 bool quiche_conn_is_established(const quiche_conn *conn);
 

quiche/src/ffi.rs

@@ -1117,6 +1117,20 @@ pub extern fn quiche_conn_session(
     }
 }
 
+#[no_mangle]
+pub extern fn quiche_conn_server_name(
+    conn: &Connection, out: &mut *const u8, out_len: &mut size_t,
+) {
+    match conn.server_name() {
+        Some(server_name) => {
+            *out = server_name.as_ptr();
+            *out_len = server_name.len();
+        },
+
+        None => *out_len = 0,
+    }
+}
+
 #[no_mangle]
 pub extern fn quiche_conn_is_established(conn: &Connection) -> bool {
     conn.is_established()